Beginning 1
Nutrients are absorbed by blood in tiny blood vessels.
2
Mechanical digestions using teeth, and chemical digestion using saliva.
3
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Mechanical digestion using organ walls, and chemical digestion using acids.
4
Water is removed from unused food, which is then compressed.
End

Malik formed a hypothesis that an increase in atmospheric oxygen levels by 10% would cause red-legged grasshoppers to grow larger than normal. suppose that malik performs an experiment to test his hypothesis. which of these actions would represent a scientific mistake in his experiment? a. he experiments on live grasshoppers instead of preserved ones. b. he focuses on red-legged grasshoppers instead of all kinds of grasshoppers. c. he varies the nitrogen and carbon dioxide levels in the air from one trial to the next. d. he conducts the experiment in a controlled lab setting with a lab partner. e. he measures the mass and length of his specimens at the start of each trial.